By
The fire occurred near a heating furnace of the topper unit around 5:20 p.m. (0820 GMT) on Monday and was extinguished by 7:45 p.m. (1045 GMT), the company said in a statement. No one was injured.
The company is investigating the cause of the fire and it does not know when the unit will restart, a spokesman said. It will maintain output by using stockpiles or increasing production at other facilities, he said.